我的emqx配置:
我的java后台代码:
@RestController
@RequestMapping("/mqtt")
public class AuthController {
    private static final Logger log = LoggerFactory.getLogger(AuthController.class);
    private HashMap<String,String> user;
    @PostConstruct
    public void init(){
        user = new HashMap<>();
        user.put("user", "123456");
        user.put("emq-client2", "123456");
        user.put("emq-client3", "123456");
    }
    @PostMapping("/auth")
    public ResponseEntity auth(@RequestParam("username") String username, @RequestParam("password") String password){
        log.info("emqx http认证组件调用,参数为,username={},password={}", username, password);
//        String value = user.get(username);
        //认证结果构造
        Map<String,Object> responseBody = new HashMap<>();
        responseBody.put("result","allow");
//        if(StrUtil.isEmpty(value)){
//            return new ResponseEntity(HttpStatus.UNAUTHORIZED);
//        }
//        if (!value.equals(password)){
//            return new ResponseEntity(HttpStatus.UNAUTHORIZED);
//        }
        return ResponseEntity.ok()
                .header("Content-Type","application/json")
                .body(responseBody);
    }
}
我的mqttx配置:

我每次点击mqttx的连接按钮,idea后台会有username未提供的警告,mqttx会报错未授权
 
        